Plugin: MP2Extended (1 Viewer)
- Thread starter FreakyJ
- Start date
I don't think MP1 uses ffprobe/ffmpeg (somebody correct me if I'm wrong).
- July 25, 2010
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- Thread starter
- #394
In fact it does:
Code:
public static Stream ExtractImage(MediaSource source, long position, int? maxWidth, int? maxHeight, string borders, string format)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return Stream.Null;
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return Stream.Null;
}
// get temporary filename
string filename = String.Format("extract_{0}_{1}.jpg", source.GetUniqueIdentifier(), position);
string tempFile = cache.GetPath(filename);
// maybe it exists in cache, return that then
if (cache.Contains(filename))
{
// if source is newer, cached image needs to be recreated
if (source.GetFileInfo().LastModifiedTime > cache.GetLastModifiedTime(tempFile))
{
cache.Invalidate(filename);
}
else
{
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
}
// We need to impersonate to access the network drive and check if the thumbnail already exists. However, because
// impersonation is lost when starting a process, we can't start ffmpeg from in here. We need to check whether the
// file is accessible from outside the impersonation context again, and start the ffmpeg process as a different user
// if that is the case.
string fullPath;
using (var context = source.CreateNetworkContext())
{
fullPath = context.RewritePath(source.GetPath());
// stream a pre-existing thumbnail, if possible
if (source.MediaType == WebMediaType.Recording && Path.GetExtension(fullPath).ToLower() == ".ts")
{
var thumbnailFileInfo = new FileInfo(Path.ChangeExtension(fullPath, ".jpg"));
if (thumbnailFileInfo.Exists && thumbnailFileInfo.Length > 0)
return StreamPostprocessedImage(new ImageMediaSource(thumbnailFileInfo.FullName), maxWidth, maxHeight, borders, format);
}
}
// finally, extract the image with ffmpeg if everything else has failed
bool extractResult = ExecuteFFMpegExtraction(source, fullPath, position, tempFile);
if (!extractResult)
{
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return Stream.Null;
}
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
private static bool ExecuteFFMpegExtraction(MediaSource source, string path, long position, string tempFile)
{
var info = new ProcessStartInfo();
info.Arguments = String.Format("-ss {0} -i \"{1}\" -vframes 1 -vf \"yadif,scale=ih*dar:ih\" -f image2 \"{2}\"", position, path, tempFile);
info.FileName = Configuration.StreamingProfiles.FFMpegPath;
info.CreateNoWindow = true;
info.UseShellExecute = false;
info.RedirectStandardError = Log.IsEnabled(LogLevel.Trace);
info.RedirectStandardOutput = Log.IsEnabled(LogLevel.Trace);
TranscoderProcess proc = new TranscoderProcess();
proc.StartInfo = info;
if (source.NeedsImpersonation)
proc.StartAsUser(Configuration.Services.NetworkImpersonation.Domain, Configuration.Services.NetworkImpersonation.Username, Configuration.Services.NetworkImpersonation.GetPassword());
else
proc.Start();
if (Log.IsEnabled(LogLevel.Trace))
{
Log.Trace("ExtractImage: executing path={0} arguments={1}", info.FileName, info.Arguments);
StreamCopy.AsyncStreamRead(proc.StandardError, l => Log.Trace("ExtractImage: stderr: {0}", l));
StreamCopy.AsyncStreamRead(proc.StandardOutput, l => Log.Trace("ExtractImage: stdout: {0}", l));
}
proc.WaitForExit();
if (!File.Exists(tempFile))
{
Log.Warn("Failed to extract image from {0} with {1} {2}", source.GetDebugName(), info.FileName, info.Arguments);
return false;
}
return true;
}- July 25, 2010
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- Thread starter
- #395
Hehe, sounds like a Apple Fan^^ I don't know why Apple safes in the IO, I mean I also have a ultra Slim Samsung Ultrabook and you can just pop a LAN Port out so that it fits into the slim design...
But bringing this adapter home is probably a good idea
So Everything is working except the MediaInfo?
I've attached a new version where I tried to add some more checks to GetMediaInfo. I couldn't reproduce it so maybe you can retry? No Reimport needed
So should be a quick one^^This is the Exception:
@henso looks also like a small Bug in the TranscodingService
- July 25, 2010
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- #396
Ah and if you would like to try streaming you must use a local file for now. Because of the InvalidCastException mentioned above streaming of files which are on a network share is not possible right now
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OK, but the input is a video file, correct? Video and audio files have no problem.
For images a bug report was posted 4 years ago (https://trac.ffmpeg.org/ticket/819), so I don't think we will see it fixed anytime soon.
There is the possibility to use short file names but if I recall correctly this will not work with network paths.
- July 25, 2010
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- #400
Thanks! Another try. Line 60 is a nasty one
ah my bad. I thought it is a general problem...
Hmm, don't really know how to proceed.
FFMPeg does support byte streams a input, right? Or Named Pipes or soemthing like that? This could be a dirty way to pump the data into it (atleast for images). What do you think?